I've been using Gixen for many years. It's easy to use, reliable, and saves me a lot of time and money. My bid is submitted just seconds before the auction is up, which prevents running the price up (unless other people are doing it) with a bidding "war". There are also a few extra conveniences that I get from buying a subscription, which is only $6.00 a year. One important one is use of a mirror server that submits a duplicate of my bid in case there is a problem with the first one getting to ebay intact. I've never had any issues with it. In addition, they are excellent at communicating when they do updates, or have technical difficulties, which seldom happens.